Aim of the lesson

• By the end of the lesson I should know

• The characteristics of the 3 types of rainfall.

• The similarities between the types of rainfall.

• The differences between them

Learning outcomes

• By the end of the lesson I should have

• Reorganised the slides on the three types of rainfall

• Described the similarities and differences

• Extension activity

• Custom animated them into a logical sequence

Types of rainfall

• Move the items into the correct places on the slide and use custom animation to show the sequence of events

• Put a correct title on each type of rainfall by removing the other types from the title

Mountains on the west coast of Britain forces the air to rise

Water vapour Condenses to form clouds

Evaporation of water from the ocean

Onshore moisture laden winds

Air cools down

Further cooling leads to precipitation

Formation of Convectional / Relief / Frontal Rainfall

Occurs in the mountains on the west coast of Britain

1,000 mm

2,000+ mm

Under 750 mm

Water vapour Condenses to form clouds

Air cools down

Further cooling leads to heavy precipitation

Warm air rises

Ground heats up the air

Sun’s rays heat up the ground

Occurs in Britain in the late afternoon after the maximum heating

In the tropical rainforest every afternoon

Formation of Convectional / Relief / Frontal Rainfall

Water vapour Condenses to form clouds Warm air rises

Further cooling leads to precipitation along the Warm Front

Air cools down

Occurs mainly in winter in Britain but can occur any time of the year

Warm moisture laden air from the south meets cold air from the north and forms the Warm Front

Formation of Convectional / Relief / Frontal Rainfall

Warm air

Cold air

Types of rainfall

• Complete these exercises

• Describe the similarities between the 3 types of rainfall. (4)

• What are the differences between the types of rainfall? (Think about the reason for air moving)

Plenary

• Outline 3 or 4 things that you learnt today

Mountains on the west coast of Britain forces the air to rise

Water vapour Condenses to form clouds

Evaporation of water from the ocean

Onshore moisture laden winds

Air cools down

Further cooling leads to precipitation

Formation of Relief Rainfall

Occurs in the mountains on the west coast of Britain

1,000 mm 2,000+ mm Under 750 mm

Water vapour Condenses to form clouds

Air cools down

Further cooling leads to heavy precipitation

Warm air rises

Ground heats up the air

Sun’s rays heat up the ground

Convectional Rainfall

Occurs in Britain in the late afternoon after the maximum heating

In the tropical rainforest every afternoon

Water vapour Condenses to form clouds

Warm moisture laden air from the south meets cold air from the north and forms the Warm Front

Warm air rises

Further cooling leads to precipitation along the Warm Front

Air cools down

Frontal or Depression rainfall

Occurs mainly in winter in Britain but can occur any time of the year

Cold airWarm air

Similarities and differences

• All 3 types of rainfall involve• Warm moist air rising• Warm air cooling• Water vapour condensing to form clouds• Further cooling leading to precipitation• The difference is the reason why the air is rising• Relief – air is forced to rise over mountains• Convectional – air is being heated• Frontal – warm air is rising over cold air